I have a Bose surround sound system in a 93 RX7. Recently the driver door speaker developed a buzzing sound. I thought it was the speaker and had it tested and was OK. I even switched the driver door speaker for the passenger door speaker and it works fine on that side and the passener speaker buzzes now, so it wasn't the speaker. I'm trying to find some direction on hunting down the potential problem and fixing it, if someone has had the problem or has knowledge about this please help.
Thanks, Pete

 

Its probably either the amplifiers or the head unit.

 

If it's the head unit you could always wire up a Miata one and maintain you Bose set up.

 

Thanks for the information at least now I have a stating place.
Pete
93RX7TT